383 lines
12 KiB
C++
383 lines
12 KiB
C++
#include "stdafx.h"
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#include "cue_parser.h"
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using namespace cue_parser;
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using namespace file_info_record_helper;
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static void build_cue_meta_name(const char * p_name,unsigned p_tracknumber,pfc::string_base & p_out) {
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p_out.reset();
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p_out << "cue_track" << pfc::format_uint(p_tracknumber % 100,2) << "_" << p_name;
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}
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static bool is_reserved_meta_entry(const char * p_name) {
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return file_info::field_name_comparator::compare(p_name,"cuesheet") == 0;
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}
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static bool is_global_meta_entry(const char * p_name) {
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static const char header[] = "cue_track";
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return pfc::stricmp_ascii_ex(p_name,strlen(header),header,~0) != 0;
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}
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static bool is_allowed_field(const char * p_name) {
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return !is_reserved_meta_entry(p_name) && is_global_meta_entry(p_name);
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}
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namespace {
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class __get_tag_cue_track_list_builder {
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public:
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__get_tag_cue_track_list_builder(cue_creator::t_entry_list & p_entries) : m_entries(p_entries) {}
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void operator() (unsigned p_trackno,const track_record & p_record) {
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if (p_trackno > 0) {
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cue_creator::t_entry_list::iterator iter = m_entries.insert_last();
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iter->m_trackType = "AUDIO";
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iter->m_file = p_record.m_file;
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iter->m_flags = p_record.m_flags;
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iter->m_index_list = p_record.m_index_list;
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iter->m_track_number = p_trackno;
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p_record.m_info.to_info(iter->m_infos);
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}
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}
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private:
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cue_creator::t_entry_list & m_entries;
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};
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typedef pfc::avltree_t<pfc::string8,file_info::field_name_comparator> field_name_list;
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class __get_tag__enum_fields_enumerator {
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public:
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__get_tag__enum_fields_enumerator(field_name_list & p_out) : m_out(p_out) {}
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void operator() (unsigned p_trackno,const track_record & p_record) {
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if (p_trackno > 0) p_record.m_info.enumerate_meta(*this);
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}
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template<typename t_value> void operator() (const char * p_name,const t_value & p_value) {
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m_out.add(p_name);
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}
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private:
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field_name_list & m_out;
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};
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class __get_tag__is_field_global_check {
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private:
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typedef file_info_record::t_meta_value t_value;
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public:
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__get_tag__is_field_global_check(const char * p_field) : m_field(p_field), m_value(NULL), m_state(true) {}
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void operator() (unsigned p_trackno,const track_record & p_record) {
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if (p_trackno > 0 && m_state) {
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const t_value * val = p_record.m_info.meta_query_ptr(m_field);
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if (val == NULL) {m_state = false; return;}
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if (m_value == NULL) {
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m_value = val;
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} else {
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if (pfc::comparator_list<pfc::comparator_strcmp>::compare(*m_value,*val) != 0) {
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m_state = false; return;
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}
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}
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}
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}
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void finalize(file_info_record::t_meta_map & p_globals) {
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if (m_state && m_value != NULL) {
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p_globals.set(m_field,*m_value);
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}
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}
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private:
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const char * const m_field;
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const t_value * m_value;
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bool m_state;
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};
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class __get_tag__filter_globals {
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public:
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__get_tag__filter_globals(track_record_list const & p_tracks,file_info_record::t_meta_map & p_globals) : m_tracks(p_tracks), m_globals(p_globals) {}
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void operator() (const char * p_field) {
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if (is_allowed_field(p_field)) {
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__get_tag__is_field_global_check wrapper(p_field);
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m_tracks.enumerate(wrapper);
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wrapper.finalize(m_globals);
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}
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}
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private:
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const track_record_list & m_tracks;
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file_info_record::t_meta_map & m_globals;
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};
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class __get_tag__local_field_filter {
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public:
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__get_tag__local_field_filter(const file_info_record::t_meta_map & p_globals,file_info_record::t_meta_map & p_output) : m_globals(p_globals), m_output(p_output), m_currenttrack(0) {}
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void operator() (unsigned p_trackno,const track_record & p_track) {
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if (p_trackno > 0) {
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m_currenttrack = p_trackno;
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p_track.m_info.enumerate_meta(*this);
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}
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}
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void operator() (const char * p_name,const file_info_record::t_meta_value & p_value) {
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PFC_ASSERT(m_currenttrack > 0);
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if (!m_globals.have_item(p_name)) {
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build_cue_meta_name(p_name,m_currenttrack,m_buffer);
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m_output.set(m_buffer,p_value);
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}
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}
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private:
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unsigned m_currenttrack;
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pfc::string8_fastalloc m_buffer;
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const file_info_record::t_meta_map & m_globals;
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file_info_record::t_meta_map & m_output;
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};
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};
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static bool meta_value_equals(const char* v1, const char* v2, bool asNumber) {
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if (asNumber) {
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// Special fix: leading zeros on track numbers
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while( *v1 == '0' ) ++ v1;
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while( *v2 == '0' ) ++ v2;
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}
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return strcmp(v1,v2) == 0;
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}
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static void strip_redundant_track_meta(unsigned p_tracknumber,const file_info & p_cueinfo,file_info_record::t_meta_map & p_meta,const char * p_metaname, bool asNumber) {
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const size_t metaindex = p_cueinfo.meta_find(p_metaname);
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if (metaindex == SIZE_MAX) return;
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pfc::string_formatter namelocal;
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build_cue_meta_name(p_metaname,p_tracknumber,namelocal);
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{
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const file_info_record::t_meta_value * val = p_meta.query_ptr(namelocal);
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if (val == NULL) return;
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file_info_record::t_meta_value::const_iterator iter = val->first();
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for(t_size valwalk = 0, valcount = p_cueinfo.meta_enum_value_count(metaindex); valwalk < valcount; ++valwalk) {
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if (iter.is_empty()) return;
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if (!meta_value_equals(*iter,p_cueinfo.meta_enum_value(metaindex,valwalk), asNumber)) return;
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++iter;
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}
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if (!iter.is_empty()) return;
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}
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//success
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p_meta.remove(namelocal);
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}
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void embeddedcue_metadata_manager::get_tag(file_info & p_info) const {
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if (!have_cuesheet()) {
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m_content.query_ptr((unsigned)0)->m_info.to_info(p_info);
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p_info.meta_remove_field("cuesheet");
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} else {
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cue_creator::t_entry_list entries;
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{
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__get_tag_cue_track_list_builder e(entries);
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m_content.enumerate(e);
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}
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pfc::string_formatter cuesheet;
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cue_creator::create(cuesheet,entries);
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entries.remove_all();
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//parse it back to see what info got stored in the cuesheet and what needs to be stored outside cuesheet in the tags
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cue_parser::parse_full(cuesheet,entries);
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file_info_record output;
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{
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file_info_record::t_meta_map globals;
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//1. find global infos and forward them
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{
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field_name_list fields;
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{ __get_tag__enum_fields_enumerator e(fields); m_content.enumerate(e);}
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{ __get_tag__filter_globals e(m_content,globals); fields.enumerate(e); }
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}
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output.overwrite_meta(globals);
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//2. find local infos
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{__get_tag__local_field_filter e(globals,output.m_meta); m_content.enumerate(e);}
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}
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//strip redundant titles and tracknumbers that the cuesheet already contains
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for(cue_creator::t_entry_list::const_iterator iter = entries.first(); iter.is_valid(); ++iter) {
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strip_redundant_track_meta(iter->m_track_number,iter->m_infos,output.m_meta,"tracknumber", true);
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strip_redundant_track_meta(iter->m_track_number,iter->m_infos,output.m_meta,"title", false);
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}
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//add tech infos etc
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{
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const track_record * rec = m_content.query_ptr((unsigned)0);
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if (rec != NULL) {
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output.set_length(rec->m_info.get_length());
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output.set_replaygain(rec->m_info.get_replaygain());
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output.overwrite_info(rec->m_info.m_info);
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}
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}
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output.meta_set("cuesheet",cuesheet);
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output.to_info(p_info);
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}
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}
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static bool resolve_cue_meta_name(const char * p_name,pfc::string_base & p_outname,unsigned & p_tracknumber) {
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//"cue_trackNN_fieldname"
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static const char header[] = "cue_track";
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if (pfc::stricmp_ascii_ex(p_name,strlen(header),header,~0) != 0) return false;
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p_name += strlen(header);
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if (!pfc::char_is_numeric(p_name[0]) || !pfc::char_is_numeric(p_name[1]) || p_name[2] != '_') return false;
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unsigned tracknumber = pfc::atoui_ex(p_name,2);
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if (tracknumber == 0) return false;
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p_name += 3;
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p_tracknumber = tracknumber;
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p_outname = p_name;
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return true;
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}
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namespace {
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class __set_tag_global_field_relay {
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public:
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__set_tag_global_field_relay(const file_info & p_info,t_size p_index) : m_info(p_info), m_index(p_index) {}
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void operator() (unsigned p_trackno,track_record & p_record) {
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if (p_trackno > 0) {
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p_record.m_info.transfer_meta_entry(m_info.meta_enum_name(m_index),m_info,m_index);
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}
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}
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private:
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const file_info & m_info;
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const t_size m_index;
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};
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}
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void embeddedcue_metadata_manager::set_tag(file_info const & p_info) {
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m_content.remove_all();
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{
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track_record & track0 = m_content.find_or_add((unsigned)0);
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track0.m_info.from_info(p_info);
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track0.m_info.m_info.set("cue_embedded","no");
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}
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const char * cuesheet = p_info.meta_get("cuesheet",0);
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if (cuesheet == NULL) {
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return;
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}
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//processing order
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//1. cuesheet content
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//2. overwrite with global metadata from the tag
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//3. overwrite with local metadata from the tag
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{
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cue_creator::t_entry_list entries;
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try {
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cue_parser::parse_full(cuesheet,entries);
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} catch(exception_io_data const & e) {
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console::complain("Attempting to embed an invalid cuesheet", e.what());
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return;
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}
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{
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const double length = p_info.get_length();
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for(cue_creator::t_entry_list::const_iterator iter = entries.first(); iter.is_valid(); ++iter ) {
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if (iter->m_index_list.start() > length) {
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console::info("Invalid cuesheet - index outside allowed range");
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return;
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}
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}
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}
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for(cue_creator::t_entry_list::const_iterator iter = entries.first(); iter.is_valid(); ) {
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cue_creator::t_entry_list::const_iterator next = iter;
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++next;
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track_record & entry = m_content.find_or_add(iter->m_track_number);
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entry.m_file = iter->m_file;
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entry.m_flags = iter->m_flags;
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entry.m_index_list = iter->m_index_list;
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entry.m_info.from_info(iter->m_infos);
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entry.m_info.from_info_overwrite_info(p_info);
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entry.m_info.m_info.set("cue_embedded","yes");
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double begin = entry.m_index_list.start(), end = next.is_valid() ? next->m_index_list.start() : p_info.get_length();
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if (end <= begin) throw exception_io_data();
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entry.m_info.set_length(end - begin);
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iter = next;
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}
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}
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for(t_size metawalk = 0, metacount = p_info.meta_get_count(); metawalk < metacount; ++metawalk) {
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const char * name = p_info.meta_enum_name(metawalk);
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const t_size valuecount = p_info.meta_enum_value_count(metawalk);
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if (valuecount > 0 && !is_reserved_meta_entry(name) && is_global_meta_entry(name)) {
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__set_tag_global_field_relay relay(p_info,metawalk);
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m_content.enumerate(relay);
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}
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}
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{
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pfc::string8_fastalloc namebuffer;
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for(t_size metawalk = 0, metacount = p_info.meta_get_count(); metawalk < metacount; ++metawalk) {
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const char * name = p_info.meta_enum_name(metawalk);
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const t_size valuecount = p_info.meta_enum_value_count(metawalk);
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unsigned trackno;
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if (valuecount > 0 && !is_reserved_meta_entry(name) && resolve_cue_meta_name(name,namebuffer,trackno)) {
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track_record * rec = m_content.query_ptr(trackno);
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if (rec != NULL) {
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rec->m_info.transfer_meta_entry(namebuffer,p_info,metawalk);
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}
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}
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}
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}
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}
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void embeddedcue_metadata_manager::get_track_info(unsigned p_track,file_info & p_info) const {
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const track_record * rec = m_content.query_ptr(p_track);
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if (rec == NULL) throw exception_io_data();
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rec->m_info.to_info(p_info);
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}
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void embeddedcue_metadata_manager::set_track_info(unsigned p_track,file_info const & p_info) {
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track_record * rec = m_content.query_ptr(p_track);
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if (rec == NULL) throw exception_io_data();
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rec->m_info.from_info_set_meta(p_info);
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rec->m_info.set_replaygain(p_info.get_replaygain());
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}
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void embeddedcue_metadata_manager::query_track_offsets(unsigned p_track,double & p_begin,double & p_length) const {
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const track_record * rec = m_content.query_ptr(p_track);
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if (rec == NULL) throw exception_io_data();
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p_begin = rec->m_index_list.start();
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p_length = rec->m_info.get_length();
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}
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bool embeddedcue_metadata_manager::have_cuesheet() const {
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return m_content.get_count() > 1;
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}
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namespace {
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class __remap_trackno_enumerator {
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public:
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__remap_trackno_enumerator(unsigned p_index) : m_countdown(p_index), m_result(0) {}
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template<typename t_blah> void operator() (unsigned p_trackno,const t_blah&) {
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if (p_trackno > 0 && m_result == 0) {
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if (m_countdown == 0) {
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m_result = p_trackno;
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} else {
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--m_countdown;
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}
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}
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}
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unsigned result() const {return m_result;}
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private:
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unsigned m_countdown;
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unsigned m_result;
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};
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};
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unsigned embeddedcue_metadata_manager::remap_trackno(unsigned p_index) const {
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if (have_cuesheet()) {
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__remap_trackno_enumerator wrapper(p_index);
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m_content.enumerate(wrapper);
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return wrapper.result();
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} else {
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return 0;
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}
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}
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t_size embeddedcue_metadata_manager::get_cue_track_count() const {
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return m_content.get_count() - 1;
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} |